>I use this to make it readonly using WSH:
>
>IF FILE("C:\scanned2903.tif") THEN
> oFSO = CREATEOBJECT("Scripting.FileSystemObject")
> oFile = oFSO.GetFile("C:\scanned2903.tif")
> * Set the read-only bit.
> oFile.Attributes = BITOR(oFile.Attributes, 1)
>ENDIF
>######################################
>I use BITOR to make it read only.
>I don't know how to reverse the BITOR.
>
>Thank you..

The following involves some quick guesses; you have to do some experimenting:

Pressumably, in the above example, the R/O attribute would be the last bit. To use BITOR, etc., you may also have to know how many bytes you have in total. Assuming it is 8 bits:

BITOR(oFile.Attributes, 1) would set the value of the very last bit to 1.

BITAND(oFile.Attributes, 254) would set the last bit to 0. 254 in binary is 11111110.

Without knowing how many attribute bits you have, you may be able to use the following combination:

First, use

BITOR(oFile.Attributes, 1)

to set the bit. Then, use

BITXOR(oFile.Attributes, 1)

This would toggle the last bit.